Android Programming for Beginners by John Horton

Author:John Horton
Language: eng
Format: epub
Publisher: Packt Publishing

Note

There is still one error in the code because we are missing the return statement, which we will add when we have finished coding the rest of the method in a minute.

In the code we just added, first, we add the overridden onCreateDialog method, which will be called by Android when we later show the dialog with code from the MainActivity class.

Then, inside the onCreateDialog method, we get our hands on a new class. We declare and initialize an object of the AlertDialog.Builder type that needs a reference to MainActivity passed into its constructor. This is why we use getActivity() as the argument.

The getActivity method is part of the Fragment class (and therefore DialogFragment too) and it returns a reference to the Activity that will create the DialogFragment. In this case, this is our MainActivity class.

Let's see what we can do with builder now that we have declared and initialized it.

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